CVE-2026-64916: CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in Microsoft Microsoft SharePoint Enterprise Server 2016
Improper neutralization of input during web page generation ('cross-site scripting') in Microsoft Office SharePoint allows an authorized attacker to perform spoofing over a network.
AI Analysis
Technical Summary
This vulnerability (CVE-2026-64916) affects Microsoft SharePoint Enterprise Server 2016 version 16.0.0. It is classified as CWE-79, indicating improper neutralization of input during web page generation, commonly known as cross-site scripting (XSS). The flaw allows an authorized attacker to conduct spoofing attacks over a network by injecting malicious scripts. The CVSS 3.1 base score is 4.6 (medium severity), with attack vector network, low attack complexity, requiring privileges and user interaction, impacting confidentiality and integrity but not availability. Microsoft has issued an official fix for this vulnerability.
Potential Impact
An authorized attacker can exploit this XSS vulnerability to perform spoofing attacks, potentially leading to limited confidentiality and integrity impacts within affected SharePoint environments. The vulnerability does not affect availability and requires user interaction and privileges to exploit.
Mitigation Recommendations
An official fix is available from Microsoft. Users of Microsoft SharePoint Enterprise Server 2016 version 16.0.0 should apply the vendor-provided patch as detailed in the Microsoft Security Response Center advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-64916 to remediate this vulnerability.
CVE-2026-64916: CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in Microsoft Microsoft SharePoint Enterprise Server 2016
Description
Improper neutralization of input during web page generation ('cross-site scripting') in Microsoft Office SharePoint allows an authorized attacker to perform spoofing over a network.
CVSS v3.1
Score 4.6medium
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CVE-2026-64916) affects Microsoft SharePoint Enterprise Server 2016 version 16.0.0. It is classified as CWE-79, indicating improper neutralization of input during web page generation, commonly known as cross-site scripting (XSS). The flaw allows an authorized attacker to conduct spoofing attacks over a network by injecting malicious scripts. The CVSS 3.1 base score is 4.6 (medium severity), with attack vector network, low attack complexity, requiring privileges and user interaction, impacting confidentiality and integrity but not availability. Microsoft has issued an official fix for this vulnerability.
Potential Impact
An authorized attacker can exploit this XSS vulnerability to perform spoofing attacks, potentially leading to limited confidentiality and integrity impacts within affected SharePoint environments. The vulnerability does not affect availability and requires user interaction and privileges to exploit.
Mitigation Recommendations
An official fix is available from Microsoft. Users of Microsoft SharePoint Enterprise Server 2016 version 16.0.0 should apply the vendor-provided patch as detailed in the Microsoft Security Response Center advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-64916 to remediate this vulnerability.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-07-20T20:25:40.976Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-64916","vendor":"Microsoft"}]
Threat ID: 6a7b582bbf8831d539156330
Added to database: 08/11/2026, 17:13:15 UTC
Last enriched: 08/11/2026, 20:14:05 UTC
Last updated: 08/12/2026, 00:41:04 UTC
Views: 2
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